140 lines
4.7 KiB
Java
140 lines
4.7 KiB
Java
/*
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* Twidere - Twitter client for Android
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*
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* Copyright 2012-2017 Mariotaku Lee <mariotaku.lee@gmail.com>
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package org.mariotaku.microblog.library.mastodon.callback;
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import android.support.annotation.NonNull;
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import android.text.TextUtils;
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import org.mariotaku.microblog.library.MicroBlogException;
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import org.mariotaku.microblog.library.mastodon.model.Notification;
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import org.mariotaku.microblog.library.twitter.model.Status;
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import org.mariotaku.microblog.library.util.CRLFLineReader;
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import org.mariotaku.restfu.callback.RawCallback;
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import org.mariotaku.restfu.http.HttpResponse;
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import org.mariotaku.twidere.util.JsonSerializer;
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import java.io.IOException;
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import java.io.InputStreamReader;
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import java.nio.charset.StandardCharsets;
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/**
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* Created by mariotaku on 15/5/26.
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*/
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@SuppressWarnings({"WeakerAccess"})
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public abstract class MastodonUserStreamCallback implements RawCallback<MicroBlogException> {
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private boolean connected;
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private boolean disconnected;
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@Override
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public final void result(@NonNull final HttpResponse response) throws MicroBlogException, IOException {
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if (!response.isSuccessful()) {
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final MicroBlogException cause = new MicroBlogException();
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cause.setHttpResponse(response);
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onException(cause);
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return;
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}
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final CRLFLineReader reader = new CRLFLineReader(new InputStreamReader(response.getBody().stream(), StandardCharsets.UTF_8));
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try {
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String event = null;
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for (String line; (line = reader.readLine()) != null && !disconnected; ) {
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if (Thread.currentThread().isInterrupted()) {
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break;
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}
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if (!connected) {
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onConnected();
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connected = true;
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}
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int valueIndex = line.indexOf(":");
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if (TextUtils.isEmpty(line) || valueIndex <= 0) {
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event = null;
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continue;
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}
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String name = line.substring(0, valueIndex);
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valueIndex++;
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while (line.charAt(valueIndex) == ' ') {
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valueIndex++;
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}
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String value = line.substring(valueIndex);
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switch (name) {
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case "event": {
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event = value;
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break;
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}
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case "data": {
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if (event != null) {
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if (!handleEvent(event, value)) {
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onUnhandledEvent(event, value);
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}
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}
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event = null;
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break;
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}
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default: {
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event = null;
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break;
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}
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}
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}
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} catch (IOException e) {
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onException(e);
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} finally {
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reader.close();
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}
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}
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@Override
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public final void error(@NonNull final MicroBlogException cause) {
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onException(cause);
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}
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public final void disconnect() {
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disconnected = true;
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}
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private boolean handleEvent(final String event, final String payload) throws IOException {
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switch (event) {
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case "update": {
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return onUpdate(JsonSerializer.parse(payload, Status.class));
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}
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case "notification": {
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return onNotification(JsonSerializer.parse(payload, Notification.class));
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}
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case "delete": {
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return onDelete(payload);
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}
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}
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return false;
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}
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protected abstract boolean onConnected();
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protected abstract boolean onException(@NonNull Throwable ex);
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protected abstract boolean onUpdate(@NonNull Status status);
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protected abstract boolean onNotification(@NonNull Notification notification);
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protected abstract boolean onDelete(@NonNull String id);
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protected abstract void onUnhandledEvent(@NonNull String event, @NonNull String payload)
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throws IOException;
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}
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